Hi, Please help me to troubleshoot below problem. I have Exchange Server 2007 SP2 with my customer (newly installed). When outlook is discovring the excahnge mail box, it is prompting for credentials and it is not accepting the valid credentials. PLease help me in trouble shooting. The workground i was done: 1. Removed Proxy settings in client browser 2. Generated valid certificate from internal ca server 3. Configured autodiscover as per the requirement 4. test client web-services cmdlet runs sucessfully I am not finding any events in eventviwer. Please suggest me in further trouble shooting. Regards, ADINARAYANA

Hi, Goto TestExchangeConnectivity.com and see is there any error. Regards,Laeeq Qazi|Team Lead(Exchange + Sharepoint + BES + DynamicsCRM) www.HostingController.com

Is it windows 2008?

If u configure the outlook profile, is it passing through the check name successfully?

Hello, Yes , it is passing through... in the next screen it is asking for credentials at test conectivity and gives error unable find exchange server. Exchange was installed on Os: windows 2003 No firwall is enabled.Antivirus was disabled for tempararly. Regards, ADINARAYANA

Hi Laeeq Qazi, I can't use this remote testing tool site. Server is offline ( Intranet). Regards, ADINARAYANA

Hi Adinarayana, Does it happen on all users or just this user? Have you tried change another computer to test the issue? Does the client computer joint the domain? I suggest you to run Test-OutlookWebServices with specific user name and check the result. Test-OutlookWebServices -Identity:xxx@xxx.com If it still give no clues, please run the following command and check the result: Test-MapiConnectivity -Identity "XXX\XXX" Related articles: Test-OutlookWebServices http://technet.microsoft.com/en-us/library/bb124509.aspx Test-MapiConnectivity http://technet.microsoft.com/en-us/library/bb123681(EXCHG.80).aspx Thanks, Elvis

Hi Elvis, Test-OutlookWebServices -Identity:xxx@xxx.com and Test-MapiConnectivity -Identity "XXX\XXX" runs sucessfully. Even POP and IMAP also it is prompting for credentials and it is not accepting valid credentials. Tested with different users and with different client machines. one hint is that, only in exchange server autodiscover happens suessfully while configuring the OUTLOOK. This problem is persisting with cleints. I tried by creating autodiscover alias and PTR records in DNS configuration. tried using best practices analyzer also. No error. Please guide me further. Regards, ADINARAYANA

Disable cheksum offload and RSS on the network card of the exchange server... Exchange, OCS...

Hi RPC, Tried your sugeestion but not succeded. Regards, ADINARAYANA

Hi Adinarayana, Could you please let me know whether your client computer is joint the domain? I suggest you use Outlook 2003 to manually setup a profile and see if it can connect to Exchange. If you don’t have Outlook 2003, I suggest you configure the profile in Outlook 2007 manually, then see if it works, if it still prompt for credential, can you send/receive email normally? Thanks, Elvis

Hi elvis, My client machines are added to domain and works fine. I tried configuring manually also. It does't connect to mailbox it self and hence i will not be able to do send or receive. In OWA, i am able to send or receive mails and it works fine. At the " online search for your server settings" it is prompting for credentials and upon sevaral attempts it push a error that " The name cannot be resolved . The connection to the microsoft exchange is unavailable." Regards, ADINARAYANA

Hi Adinarayana, I suggest you manually setup the profile and put the FQDN of GC into the server field, then see if it can resolve the name properly. I also suggest you check if all Exchange related services are started in the mailbox server. Please also check if there is any third party software that can affect the communication between mailbox server and GC. Thanks, Elvis